Langbahn Team – Weltmeisterschaft

1460 Haltia

1460 Haltia
Discovery[1]
Discovered byY. Väisälä
Discovery siteTurku Obs.
Discovery date24 November 1937
Designations
(1460) Haltia
Named after
Halti/Haltia[2]
(highest Finnish peak)
1937 WC
main-belt · (middle)
background[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc79.61 yr (29,077 days)
Aphelion3.0202 AU
Perihelion2.0643 AU
2.5422 AU
Eccentricity0.1880
4.05 yr (1,481 days)
245.72°
0° 14m 35.52s / day
Inclination6.6858°
74.185°
358.22°
Physical characteristics
Dimensions6.57±1.19 km[4]
7.43±0.61 km[5]
8.440±0.225 km[6]
8.97 km (calculated)[7]
3.58682±0.00006 h[8]
3.588±0.005 h[8]
3.59 h[7]
0.186±0.032[5]
0.20 (assumed)[7]
0.226±0.030[6]
0.36±0.15[4]
S (assumed)[7]
12.60[4][6][7] · 12.7[1] · 12.78±0.14[9] · 13.10[5]

1460 Haltia, provisional designation 1937 WC, is a stony background asteroid from the central regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 24 November 1937, by Finnish astronomer Yrjö Väisälä at the Iso-Heikkilä Observatory in Turku, Finland.[10] The asteroid was named after Halti (Haltia), Finland's highest peak on the border to Norway.[2]

Orbit and classification

Haltia is a non-family asteroid of the main belt's background population.[3] It orbits the Sun in the central asteroid belt at a distance of 2.1–3.0 AU once every 4 years and 1 month (1,481 days). Its orbit has an eccentricity of 0.19 and an inclination of 7° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation at Turku.[10]

Physical characteristics

Haltia is an assumed stony S-type asteroid.[7]

Rotation period

Two rotational lightcurves of Haltia were obtained from photometric observations by astronomers Henk de Groot, Raoul Behrend and René Roy. Lightcurve analysis gave a respective rotation period of 3.58682 and 3.588 hours with a brightness amplitude of 0.32 magnitude (U=3-/3).[8] The Lightcurve Data Base adopts a consolidated period of 3.59 hours.[7]

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Haltia measures between 6.57 and 8.44 kilometers in diameter and its surface has an albedo between 0.186 and 0.36.[4][5][6]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 8.97 based on an absolute magnitude of 12.6.[7]

Naming

This minor planet was named after Halti (Haltia), the highest Finnish peak at 1,365 metres (4,478 ft) located on the border between Norway and Finland.[2] The official naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3928).[11]

References

  1. ^ a b c d "JPL Small-Body Database Browser: 1460 Haltia (1937 WC)" (2017-07-04 last obs.). Jet Propulsion Laboratory. Retrieved 20 October 2017.
  2. ^ a b c Schmadel, Lutz D. (2007). "(1460) Haltia". Dictionary of Minor Planet Names – (1460) Haltia. Springer Berlin Heidelberg. p. 117. doi:10.1007/978-3-540-29925-7_1461. ISBN 978-3-540-00238-3.
  3. ^ a b "Asteroid 1460 Haltia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 29 October 2019.
  4. ^ a b c d Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 20 October 2017.
  5. ^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
  6. ^ a b c d Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 20 October 2017.
  7. ^ a b c d e f g h "LCDB Data for (1460) Haltia". Asteroid Lightcurve Database (LCDB). Retrieved 20 October 2017.
  8. ^ a b c Behrend, Raoul. "Asteroids and comets rotation curves – (1460) Haltia". Geneva Observatory. Retrieved 20 October 2017.
  9. ^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 20 October 2017.
  10. ^ a b "1460 Haltia (1937 WC)". Minor Planet Center. Retrieved 20 October 2017.
  11. ^ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.
Quelle: https://en.wikipedia.org/wiki/1460_Haltia